Wrapper folding mechanism



5 Sheets-Sheet l W. B. BRONANDER WRAPPER FOLDING MECI'IA'NISM May 21,1946.

Original Filed Feb. l2, 1942 May 21, 1945- w. B. BRoNANDr-:R

` WRAPPERFOLDINGMECHANISM Original Filed Fb. l2, 1942 3 Sheets-Shed;42,.

ATTORNEY Patented May 2l, 1946 UNITED STATES Y WRAPPER FOLDING MECHANISMWilhelm B. Bronander, Montclair, N. J.

Original application February .12,` 1942, Serial No. 430,566. Dividedand this application January v 26, 1945, serial No. 574,723

a claims.

This invention relates to an improvement in a wrapper folding mechanismshown yin my copending application for patent Serial No. 430,566,

Figure 2 is a plan view `of some of the parts shown in Fig. 1;

Figure y3 is a sectional elevation takensubstan-i tially on line 3 3 ofFigure ,1;

Figure 4 is a sectional elevation of Asome of the parts shown in Fig.1,-shown in diierent relative positions and illustrating lthe operation.

Figs.v5, 6, 7 and 8 are perspective views of one end of a package andshow successive stages of the wrapper fold. l

In the `aforesaid application I have shown inI detail a mechanism bymeans of which a wrapper l is folded arounda package and positioned inan intermittently rotatable turret wheel comprising two laterally spacedside members 55, 55 mounted i 30 of which folds is shown in Fig 5 Theupper on a shaft'56. 'I'hese side members are provided with alined,exactly similar pockets P which receive the articles vand thewrapperwhich are folded over the front edge and the top and bottom of them.vThe shaft 56 is driven by a main shaft 15 through which form no part ofthis invention. The shaft 15 is driven from any suitable source ofpower. On it is a gear 16 which meshes withla gear 11 carried by a Shaft18.

As the articles are carriedaround by the turret wheel the outwardlyprojecting iiaps 8| of the wrapper are first folded down against theouter surface of the article by an arcuate folding plate 85 carried byan arm 86 rotatably mounted on a shaft 88. The arm 86 has securedthereto a sleeve 89 which carries at its outer end an arm 98. 'Ihe arm98 is pivoted at 9| to a, link 92 which is pivoted at its opposite endto an eccentric strap 93 surrounding an eccentric 94 carried by a shaft95. As the eccentric rotates, the link 92 will be oscillated and thefolding plate 85 moved alternately in opposite direction.

Ihe shaft 88 has secured to its outer end an arm |88 which is pivoted tolink |8|, the other 20 mounted on idle'sprocket 'wheelsj|28.

35 Geneva gearing 19, the details ,of-

end of which is pivoted to an eccentricv strap |82 mounted on an'eccentric |83 carried by the shaft 9:5.` This eccentric is so designedthat the `plate 98 will be moved in a clockwise direction after the flap6| has been folded down and the plate v 98 will engage and fold ap 62'downwardly over Vthe flap 6|. Thus when the articles reach thehorizontal position shown to the rightin Figure 1, the wrappers encirclethem with the j portion of the wrappersextending outwardly Vfrom theends of the articles. The means 'for folding these outwardly extendingportions of the wrappers will` now be described.` Y v A gear 3 mountedon the shaft 18 meshes with a gear' rcarried by a shaft ||5 which isparallel to andv spaced from the shaft 55'. Sprocket wheels ||6 onshaftl| I5 drive `sprocket chains ||1 from which extend spaced feedingVmembers" or lugs |18. `The chains I |1 are also Outside of the turretwheel and at' the sidesY of the table I2 a pairk of disks |25, |26 aremounted on the shaft I5 to rotate with the sprocket wheels.,y l I6. Eachdisk has projecting from its periphery a plurality of angularly spacedblades |21 which have'ilat arcuate enfdswhich engage vparts of thev ywrapper which extend from the package beyondy j opposite sidesof ytheturret wheel and `vmakethe first end folds `-a'on the ends of 'thepackage,vone

runs of the chains are parallel with the table |2| and the lugs ||8which are spaced-back'of `the arcuate ends' kof the blades` |21 asl thelatter engage the wrapper, pass upwardly between the and engage thepackages in the right hand pocket P and feed it out of the pocket andalong the table |2| When the packages reach the position in which one ofthem is shoWnatf'A, in Fig. '4,

the rear ends of the packages are beyond the rotary path of the blades|21.

The other end folds are made in the usual manner. The second end fold b(Fig. 6) is formed by stationary tuckers |38 disposed at the sidesv ofthe table |2|. The tucker |38 which would appear in Fig. 4 has beenomitted from this gure for the sake of clarity. The third end fold c(Fig. 7) is formed by passing the wrapper through a slot I 3| formedbetween stationary blocks and the fourth end fold d(Fig. 8) by passingthe wrapper through a slot |32. These slots are formed in walls at thesides of the table.

After the articles are thus completely wrapped,

PATENT oF'FlcEf` spaced side members 55, 55 of the turret wheel' theyare carried along the table tok a suitable point of delivery. l

Various modifications in construction, mode of operation, method and useof an invention may and do occur to others, especially after benefit-`ing from knowledge of such disclosure as that herein presented of theprinciples involved, but

the invention itself is not conned to the presenti having projectingparts arrangedto'engage parts of a wrapper extending from the ends of apack-` age in the turret wheel beyond the sides of said,v

turret wheel.

2. A straight guide, ar rotatable turret wheel I v having a'radiallydisposed pocket adapted yto re ceive a package and `a wrapper and tomove thel v package to position oneof its sides in ralinernent with theguide, a shaft parallel with and spaced from the axis of rotation of theturret wheel, and

angularly spaced'blades on the shaft on opposite -v Y sides of't'heguidearranged to engage parts of a wrapper extending from the ends of apackage in the turret wheel beyond the sides of said turret wheel.

`SQA straight guide,-a rotatable turret wheel having` a radiallydisposed pocket adapted to re,l

ceive a package and a wrapper and to move the Y package to position oneofits sides inalinement withthe guide, a shaft parallel with anduspacedfrom the axis of rotation of the turret wheel, and Y v disks on theshaft on opposite sidesv of the guide',y

each of said disks having ya blade projecting from its peripheryarranged to engage parts of .a

wrapper extendingV from the ends of a package in the turret wheelbeyondthe sides of said turret;-

wheel.

4. A straight guide, a rotatable turret wheel havingva radiallyydisposed pocket adapted .to 're-Q ceive `a package and a wrapper and tomove the package to position onevof its 'sides in alinement,

with the guide, ashaft parallel with yand spaced from the axis ofrotation of the turret wheel, and n disks on. thershaft on oppositesides ofthe guide,`

eachof said-disks havinga pluralityv of angularly spaced bladesextending vfrom its periphery arranged to engage parts of a wrapperextending' from the ends of a package in the turret 4Wheel beyond lthesides of said turret wheel. l 5. A straight guide, a rotatable turretwheel tending from the ends rof a package inthe turret from the axis ofrotationr of the turret wheel, and disks on the shaft on opposite sidesof the guides,v each of said disks havinga plurality of angularlyKYspaced blades extendingrfrom itsperiphery with a at arcuate portion attheouter end `of each.

blade arranged to engage parts of a wrapper exk tending from the ends ofa package in the turret wheel beyond the sides of said turret wheel.Y

6. Astraight'guide, a lrotatable turret-wheel having a radially disposedpocket adapted' to receive a package and a wrapper and to move thepackage to position one of its sides in alinernent with .the guide, ashaft parallel with and spaced from the axis of rotation of theturretwheel, f

disks on rthe shaft on. opposite sides of theguide havingprojectinglparts arranged toengage parts of a wrapper extending fromthefends of a pack# i. age in the turret wheel beyond the sides of saidj wheel, a sprocket wheel on said shaft arranged to rotate with saiddisks, a sprocket chain having a run parallel with the guide,, andspaced lugs on the chain projecting `into a pocketj in the turretflfWheeland through'the guide arranged to propel the packages. t

7. A straight guide, a( rotatable-turret wheeli having a radiallydisposed pocket adapted'tozr'e-j ceive a package anda Ywrapperand tomove the package toposition one of its sides in alinerne'nt with theguide, a vshaft parallel with and spacedr fromthe axis of rotation oftheturret wheel,1 Y

disks on the shaftl on opposite 'sides of the guide, each of said diskshaving'a, blade projecting from its periphery arrangedto engage parts ofa Wrap# y per extendingfrom the ends lof a package in the turret wheelbeyond the sides of the turret -Whe'el-l a sprocket chain having a runparallel with 'the i guide, and spaced lugs on the chain'projecting intoa pocket .in the turret wheel and!-throu'glr` the guide arranged topropel the packages.` f*

`8. A vstraight guide, a rotatable turret wheel" having a radiallydisposed p'ocket adapted to rel ceive a package anda wrapper'and tomovethe package to position one OfitS'sides in alinement,`

with the guide,- a shaft parallel with-and spaced' from the axis ofrota/tionv of thet'urret wheel," disks on the shaft "on opposite sidesofthe guides,V each of said'disks having a' plurality kof langularlyspaced blades extending from its periphery withf a flat arcuateportionof thevouter end'of each blade arranged to engage'partsV of Vawrapper ex`f wheel beyond the'sides of the turret wheel, a

having a radially disposed pocket adapted to re-l ceive apackagve and awrapper and to move the package to position one of its sides inalinement with ,theguida a shaft parallel with and spaced Y sprocketrwheel on said shaft arrangedto rotate` y with said disks, asprocket/chainl havingal runfg parallel with the guides, and spacedlugs' on the chain projecting into a pocket inthe turret wheel andthrough the guidearranged to'propel the packages, said lugs being spacedto engage the rear ends of the packages after the flat arcuate portionsof the blades have engagedthe wrapper.V WILHELM BRO.NNDER;r 'y i'

